Couchbase Mobile 2.1 has been released, building on the advancements of version 2.0 with enhanced security, performance, and availability for mobile applications. Key features include peer-to-peer data synchronization, allowing devices to sync data directly without a central server, and on-device data encryption using AES-256, enhancing data security for industries like healthcare and finance. The Sync Gateway now guarantees high availability by using N1QL/GSI for internal functions, eliminating downtime during server rebalances or failovers, and introduces continuous logging for improved support capabilities. Additional enhancements include log redaction for privacy and support for X.509 certificate authentication, ensuring comprehensive security and operational efficiency. These updates are designed to meet the needs of business-critical applications, offering a robust platform for edge data management and syncing.